Wireless Headphones - with microphone, True Wireless pits, semi-closed construction, Bluetooth 5.1, supports AAC, aptX, aptX HD and SBC, active noise control (ANC), game mode, voice Assistant, power bank, track shuffle, taking calls, IPx1 certification, frequency range: 20 Hz-20000 Hz, sensitivity: 97 dB/mW, impedance: 32 Ohm, converter: 13mm, battery life of up to 20 hr(s) (5 hr(s)+15 hr(s))